Car truck



June 23, 1925.

l' G. H. GIBSON CAR TRUCK Filed Jan, 26. 1924 r Il . Patented June 23, 1925.

UNITED STATE S PATENTfoFFlc-s.

GEORGE rr. GIssoN, or sr. LOUIS, nrssou'm,v nssrenon rovco'x'ioirwmrn QOMTAN'Y, 0F ST. LOUIS, MISSOURI, A. CORPORATION' '0F NEW can. raucx.

Application ma nam-y zo, im. semi n. masso.

`ication, such as will enable others skilled in the art to which it appertains yto make \spring 5.

and use the same.

My invention relates to railroad; rolling stock and consists in an improved truck construction relating to the mounting of the truck frame upon the equalizer springs.

The object of my invention is tofacilitate vthe application and 'removal of equalizersprings to the equalizer bars and wheel- P pleces. By means of-mv invention theseoperations' are accomplished without removing the equalizers from the journal boxes and without other substantial disassemblage of the truck parts.

In the accompanying drawings which il,

lustrate a selected embodiment of my in- -vention-' Figure 1 is a top view of a portion of a six wheel truck equipped with myinvention.

Figure 2 is a side elevation of the parts shown in Figure 1.

Figure 3 is a vertical transverse section taken approximately on the line 3--3 of Figure 2.

The truck two of the wheels being indicated at 1 mounted upon the axles 2 and journaled in boxes 3 in the usuall manner. Equalizer bars 4 are mounted u on thevjournal boxes 3 and carry the trucl frame through the equalizer s rings 5. Each equalizer 4 is provided withv a seat 6 for seating the corresponding spring 5- and the wheel ieces 7 of the truck frame are provided wit openings 8 over each seat 6'for' receiving a These openings extend through wheel pieces 7 and each is closed at its upper end y a cap 9 removabl secured to the wheel piece 7. In my pre erred construction cap 9 is shown as straddling the wheel piece 7 at one end with its dependin legs 10 secured to the wheel piece b a orizontal pin 11. The o posite end ofy cap 9 is provided with a epending leg 12 positioned centrallg of the wheel piece and secured thereto y a pin 13.

' replaced by 'removl illustratedv is a six wheel truck v y' To accommodate spring 5 and' to compensate vfor the metal removed' from the wheel piece in providing opening 8 the wheel piece 1s provi ed with kflanges 14 adjacent openingS andthe yvertical wall of the boxshaped wheel piece 'is curved outwardly at this pointto form a substantially cylindrical housing for the spring.

' With the above described 0r a sixnilaiconstruction, springs 5 maybe removed and f cap '9v and without disturbing the assem 1y ofthe remainder of the 'truck parts.` .To do this itis necessary to' relieve pins"11 and 13 of thepressure .in opposite `directions of the wheel iece and cap legs'and this may be done `1n several ways.- For 'a instance, a jack may be placed "upon ,the top of-the cap 9 and av chiin. .wrapped around the outer end of the jack screw and the lower face of wheel piece. 7. If the jack is then extended, cap 9 will be forced downwardly, compressing spring 5 so as to relieve pins 11 and 13. The chain may be wrapped around the bottom of wheel piece 7 and the top of .the jack or over a suitable laterally extending bar or othery tool placed upon the jack soi-as to provide aseat for thechain or chains spaced 'from the vertical axis of the )ac Another method would be so support the truck frame on suitable blocks and insert a jack between the'to of cap 9 and the bottom of the car bodJy or the car body,

with the ytruck frame blocked up, could be- -raised and blocks Vapplied between cap 9 and the ycar body land. the body then lowered until cap 9 vwas moved to free pins '11 and 13. `Other 'methods of securing the same result will suggest themselves to workmen familiar with car repairing.

Obviously the form of the wheelpiece ma be varied from the box section shown in t e accompanying drawings and the'shape and a plication ofthe ringy cap 9 may be modi ed without departmg from the spirit of my invention as expressed in the appended claims.

I claim:

1. In. a car truck frame, a wheel piece of substantially constant cross sectional area and provided with a vertical spring receiving opening, and a spring seat detachably secured to said wheel iece over said opening.

2. InV av car truck ame, a wheel piece of hollow rectangular cross section, lateral eny largements in said wheel piece with a vertically aligned opening between them for receiving a supporting spring, and a sprin seat extending over said opening and secure to said wheel piece at either end of said enlargements.

3. In a car truck frame, a wheel piece, including side walls and a to spring receiving opening, reinforcing flanges on said wheel piece adjacent said opening, a spring sea-t over said opening, depending legs on said seat detachably secured to said wheel piece at opposite sides of said opening, and reinforcing ribs extending from the center of said seat toward its edges.

4. In a car truck, a wheel piece provided with a vertical opening, and a cap extending over said opening and provided with depending legs straddling said wheel piece and secured thereto by horizontal pins.v

5. In a car truck, a wheel piece provided with a vertical opening, and a cap extending over said opening, straddling said wheel piece at one end, inserted in said Wheel piece at its opposite end, and secured at both ends by horizontal pins.

wall having a 6. In a car truck, Wheeled axles, journal boxes, an equalizer supported on said boxes, a springgcap seated on said equalizer and straddling the same, a spring seated on said cap, a frame Wheel piece carried on said spring, and means whereby said spring may be removed through said wheel piece.

7. In a car truck, wheeled axles, journal boxes, a solid equalizer of substantially constant width supported on said boxes, a spring mounted on the top of said equalizer, a frame wheel piece carried' on said spring, and means whereby said spring may be removed independently of movement of said equalizer and wheel piece.

8. In a car truck, an equalizer spring, a frame wheel piece provided with a vertical opening-over said spring and having horizontal flanges adjacent said opening to maintain the sectional area of the wheel piece, and a removable seat for said spring secured Vto said wheel piece at each end of said flanges `and extending over said opening.

In testimony whereof I hereunto ailix my signature this 22 day of January, 1924.

GEORGE H. GIBSON. 

